Process of treating lime.



7 ceilings to pit, crack, and chip off.

UNITED STATES IPatented December 22, 1903;

PATENT OFFICE.

JOHN JOSEPH FEELY, OF WHITEPLAINS, NEW-YORK, ASSIGNOR OF ONE HALF TO JAMES OOONNELL, OF NEW YORK, N. Y.

PROCESS OF TREATING LIME.

SPECIFICATION forming part of Letters Patent No. 747,689, dated December 1903- Application filed March 5, 1903. Serial No. 146,374. (No specimens-l To all whom it may concern.-

Be it known that I, JOHN J osEPH FEELY, a

citizen of the United States, and a resident These changes frequently occur after the lime has been made up into mortar and mixed with plaster and placed upon walls and ceilings, in many cases causing the walls and My invention has for its purpose the production and manufacture of lime which will eliminate or overcome the class of objections above set forth.

The invention consists in the novel steps I of the process to be hereinafter fully set forth,

and pointed out in the claims.

In practicing my invention common quicklime is first slaked to a granulated or powdered condition by a solution of acetic acid and water. pared by blending together the said acetic acid and water in about the proportions of thirty-two drams of acid and seven gallons of water, and in commingling these ingredients care must be taken not to make the solution any stronger chemically than here stated, as otherwise it will have a tendency to burn the lime. After the quicklime has been slaked to the above-mentioned granulated or powdered condition it is allowed to remain absolutely undisturbed for a period approximating twenty hours, in order to give the solution time to thoroughly impregnate the-lime. After the lime has laid in the solution above mentioned for the stated period of time said lime is manipulated in any desired manner most convenient to expose it to the action of the air for a further period of four hours, at the end of which time the This chemical solution is prelime will be found to be dry, white, and

erated in the manipulation of the slaked lime,

assisted by the chemical properties of the solution, which act as a drier as well as a solvent. It should be thoroughly understood that no other quicklime or other substance-is to be added to the lime originally intended to be prepared by this process-such, for example, as is often'practiced of adding more quicklime to take up any moisture in order to dry the lime quickly. In fact, after the lime has been treated by the solution it does not require any extra quicklime to take up any moisture or assist iii any manner to further its preparation. After the second period of four hours, making twenty-four hours in all, the lime being now white and dry, as the final step of my process it must be conveyed to a pulverizing-machine and there ground or pulverized to the desired fineness. The lime is now ready for use.

The article thus produced may be kept for an indefinite time without air-slaking, it will not slake, heat, swell, or change, it retains its setting qualities, is ready for use at any time, and may be applied to great advantage to any other purposes for which lime is'commonly used, but especially in mortars and plasters.

Having thus described my invention, I claim as new and desire to secure byLetters Patent 1. In the process of treating lime,'slaking quicklime to a powdered or granulated condition by a chemical solution of acetic acid and water, as set forth. 1

2. The herein-described process of treating lime, which consists in, slaking lime to a powdered or granulated condition in. a chemical solution of acetic acid and water, and drying said lime by the action of attrition, assisted by the chemicals insaid chemical solution, as described.

3. The herein-described process of treating lime, which consists in slaking lime to a powdered or granulated condition inachem- In testimony whereof I have signed my ical solution of acetic acid and water, drying name to this specification in the presence of said lime by the action of attrition, assisted two subscribing witnesses. by the chemicals in said chemical solution, JOHN JOSEPH FEELY.

5 and finally in grinding said slaked and dried Witnesses:

lime chemically prepared, to a still finer poW- WM. FREDERIC LAYTON, dercd form, as set forth. JOHN J. NUGENT. 

